Subject: [IGSREPORT-3239] Wk 0880 JPL GNAAC Analysis Report
From: M B Heflin
Date: Wed, 4 Dec 1996 11:39:23 PST

******************************************************************************
IGS Electronic Report    Wed Dec  4 11:39:23 PST 1996      Message Number 3239
******************************************************************************

Author: M B Heflin 
Subject: Wk 0880 JPL GNAAC Analysis Report

******************************************************************************
GNAAC COMPARISON FROM JPL FOR GPS WEEK 880 NOV 17, 1996 - NOV 23, 1996
******************************************************************************

M B Heflin, J F Zumberge, D C Jefferson, M M Watkins, F H Webb

all at the Jet Propulsion Laboratory, California Institute of Technology,
Pasadena, CA  91109.

Solutions in SINEX format were obtained from COD, EMR, GFZ, JPL, NGS, and SIO.
Each center was compared to each other center by estimating a 7-parameter
Helmert transformation to minimize the least-squares coordinate residuals.

The following table summarizes comparison results.  The North, East, and
Vertical WRMS values are given in mm for each pair.  The number of common sites
is given directly underneath the values for WRMS.  The number underneath each
center's name is the scale factor applied to the formal errors from that
center.  Transformation parameters for each pair are given at the end of the
report.

We also compute a free-network combination of solutions from all centers.  Each
solution is scaled and edited according to the results of pairwise comparisons.
Then all free-network solutions are rigorously combined using their full
covariance matrices.  Sites common to all solutions are used to compare
individual solutions with the combination and residuals are given in the first
row of the comparison table.

Remarks:  A weekly solution from NGS was constructed by combining their daily
submissions.

TABLE OF COMPARISON RESIDUALS (N E V in mm)
-------------------------------------------------------------------------------
     cod        emr        esa        gfz        jpl        ngs        sio
c+----------+----------+----------+----------+----------+----------+----------+
o| 2   3  10| 4   9  10| 4   8  37| 3  12  14| 2   2   8| 9  14  10| 2   3  10|
m|    18    |    18    |    18    |    18    |    18    |    18    |    18    |
b+----------+----------+----------+----------+----------+----------+----------+
     cod    | 7  10  15| 4   7  36| 5  10  15| 4   4  18| 8  14  16| 3   5  14|
    10.0    |    29    |    47    |    43    |    41    |    48    |    54    |
            +----------+----------+----------+----------+----------+----------+
                emr    | 7  14  45| 5  15  16| 5   9  13|13  18  12| 6   9  14|
                4.0    |    23    |    24    |    22    |    26    |    26    |
                       +----------+----------+----------+----------+----------+
                           esa    | 7  15  41| 6   8  40|10  18  39| 5   9  40|
                           5.0    |    37    |    34    |    41    |    48    |
                                  +----------+----------+----------+----------+
                                      gfz    | 3  11  19| 9  16  14| 4  12  19|
                                     15.0    |    32    |    42    |    46    |
                                             +----------+----------+----------+
                                                 jpl    | 9  14  15| 3   4  17|
                                                 5.0    |    35    |    38    |
                                                        +----------+----------+
                                                            ngs    | 9  14  19|
                                                           20.0    |    47    |
                                                                   +----------+
                                                                       sio
                                                                       2.0
-------------------------------------------------------------------------------

COD TO EMR TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .7073E+02
 DOF        =          80
 CHI^2/DOF  =         .88
 RX =   .8296E-08  +-   .1366E-09  rad
 RY =  -.3052E-08  +-   .1427E-09  rad
 RZ =  -.9754E-09  +-   .1989E-09  rad
 TX =   .3478E-01  +-   .1392E-02  m
 TY =   .1192E+00  +-   .1440E-02  m
 TZ =  -.4440E-01  +-   .1317E-02  m
 S  =   .6312E-09  +-   .3487E-09  parts
----------------------------------------

COD TO ESA TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .8071E+02
 DOF        =         134
 CHI^2/DOF  =         .60
 RX =  -.7288E-08  +-   .1705E-09  rad
 RY =  -.3231E-08  +-   .1495E-09  rad
 RZ =  -.2219E-04  +-   .2467E-09  rad
 TX =  -.2106E-01  +-   .2112E-02  m
 TY =  -.5256E-01  +-   .2140E-02  m
 TZ =   .5639E-01  +-   .1924E-02  m
 S  =  -.5232E-08  +-   .5149E-09  parts
----------------------------------------

COD TO GFZ TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .5952E+02
 DOF        =         122
 CHI^2/DOF  =         .49
 RX =   .2722E-08  +-   .1360E-09  rad
 RY =  -.1322E-08  +-   .1212E-09  rad
 RZ =  -.6293E-09  +-   .2468E-09  rad
 TX =   .6227E-02  +-   .1464E-02  m
 TY =   .1471E+00  +-   .2069E-02  m
 TZ =   .5035E-02  +-   .1285E-02  m
 S  =  -.1041E-09  +-   .4056E-09  parts
----------------------------------------

COD TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .7551E+02
 DOF        =         116
 CHI^2/DOF  =         .65
 RX =  -.4015E-08  +-   .9608E-10  rad
 RY =   .9818E-09  +-   .9503E-10  rad
 RZ =   .2733E-07  +-   .1068E-09  rad
 TX =   .1330E-01  +-   .1006E-02  m
 TY =   .1180E-02  +-   .1070E-02  m
 TZ =   .2970E-01  +-   .1032E-02  m
 S  =   .4199E-09  +-   .2832E-09  parts
----------------------------------------

COD TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .9462E+02
 DOF        =         137
 CHI^2/DOF  =         .69
 RX =   .8301E-08  +-   .9811E-10  rad
 RY =   .3755E-08  +-   .9530E-10  rad
 RZ =  -.3767E-07  +-   .1556E-09  rad
 TX =   .1029E-01  +-   .1045E-02  m
 TY =   .1980E+00  +-   .1319E-02  m
 TZ =  -.1183E+00  +-   .8577E-03  m
 S  =   .6305E-09  +-   .2589E-09  parts
----------------------------------------

COD TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .7651E+02
 DOF        =         155
 CHI^2/DOF  =         .49
 RX =  -.9440E-08  +-   .7760E-10  rad
 RY =  -.2566E-08  +-   .6834E-10  rad
 RZ =  -.2028E-07  +-   .1112E-09  rad
 TX =  -.2618E-02  +-   .7617E-03  m
 TY =  -.2452E-02  +-   .8935E-03  m
 TZ =   .2663E-01  +-   .6550E-03  m
 S  =   .4894E-09  +-   .1901E-09  parts
----------------------------------------

EMR TO ESA TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .6947E+02
 DOF        =          62
 CHI^2/DOF  =        1.12
 RX =  -.1580E-07  +-   .2950E-09  rad
 RY =  -.3382E-09  +-   .3218E-09  rad
 RZ =  -.2219E-04  +-   .5324E-09  rad
 TX =  -.5362E-01  +-   .3764E-02  m
 TY =  -.1722E+00  +-   .3631E-02  m
 TZ =   .9700E-01  +-   .3430E-02  m
 S  =  -.6343E-08  +-   .1002E-08  parts
----------------------------------------

EMR TO GFZ TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .5557E+02
 DOF        =          65
 CHI^2/DOF  =         .85
 RX =  -.5722E-08  +-   .2235E-09  rad
 RY =   .1764E-08  +-   .2528E-09  rad
 RZ =   .4627E-09  +-   .4200E-09  rad
 TX =  -.2646E-01  +-   .2744E-02  m
 TY =   .2714E-01  +-   .2941E-02  m
 TZ =   .4973E-01  +-   .2332E-02  m
 S  =  -.9062E-09  +-   .6622E-09  parts
----------------------------------------

EMR TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .5809E+02
 DOF        =          59
 CHI^2/DOF  =         .98
 RX =  -.1230E-07  +-   .1708E-09  rad
 RY =   .4313E-08  +-   .1666E-09  rad
 RZ =   .2797E-07  +-   .2843E-09  rad
 TX =  -.2140E-01  +-   .1725E-02  m
 TY =  -.1171E+00  +-   .1833E-02  m
 TZ =   .7384E-01  +-   .1493E-02  m
 S  =  -.1028E-08  +-   .4204E-09  parts
----------------------------------------

EMR TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .4475E+02
 DOF        =          71
 CHI^2/DOF  =         .63
 RX =  -.3416E-09  +-   .2321E-09  rad
 RY =   .7004E-08  +-   .2979E-09  rad
 RZ =  -.3712E-07  +-   .4830E-09  rad
 TX =  -.2419E-01  +-   .2540E-02  m
 TY =   .7641E-01  +-   .2411E-02  m
 TZ =  -.7269E-01  +-   .1610E-02  m
 S  =  -.1213E-09  +-   .4469E-09  parts
----------------------------------------

EMR TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .5939E+02
 DOF        =          71
 CHI^2/DOF  =         .84
 RX =  -.1785E-07  +-   .1412E-09  rad
 RY =   .3720E-09  +-   .1433E-09  rad
 RZ =  -.1919E-07  +-   .2399E-09  rad
 TX =  -.3415E-01  +-   .1333E-02  m
 TY =  -.1214E+00  +-   .1455E-02  m
 TZ =   .7267E-01  +-   .1211E-02  m
 S  =  -.8646E-10  +-   .3202E-09  parts
----------------------------------------

ESA TO GFZ TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .8418E+02
 DOF        =         104
 CHI^2/DOF  =         .81
 RX =   .1004E-07  +-   .2511E-09  rad
 RY =   .1903E-08  +-   .2324E-09  rad
 RZ =   .2219E-04  +-   .4294E-09  rad
 TX =   .2581E-01  +-   .2935E-02  m
 TY =   .1998E+00  +-   .3490E-02  m
 TZ =  -.4951E-01  +-   .2598E-02  m
 S  =   .5647E-08  +-   .7830E-09  parts
----------------------------------------

ESA TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .6018E+02
 DOF        =          95
 CHI^2/DOF  =         .63
 RX =   .2928E-08  +-   .2145E-09  rad
 RY =   .4591E-08  +-   .2031E-09  rad
 RZ =   .2222E-04  +-   .3071E-09  rad
 TX =   .2992E-01  +-   .2670E-02  m
 TY =   .4884E-01  +-   .2486E-02  m
 TZ =  -.2570E-01  +-   .2543E-02  m
 S  =   .5030E-08  +-   .7280E-09  parts
----------------------------------------

ESA TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .1147E+03
 DOF        =         116
 CHI^2/DOF  =         .99
 RX =   .1529E-07  +-   .2502E-09  rad
 RY =   .7199E-08  +-   .2389E-09  rad
 RZ =   .2215E-04  +-   .5121E-09  rad
 TX =   .2911E-01  +-   .2828E-02  m
 TY =   .2472E+00  +-   .3170E-02  m
 TZ =  -.1714E+00  +-   .2165E-02  m
 S  =   .5979E-08  +-   .6311E-09  parts
----------------------------------------

ESA TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .1131E+03
 DOF        =         137
 CHI^2/DOF  =         .83
 RX =  -.2123E-08  +-   .1668E-09  rad
 RY =   .7232E-09  +-   .1487E-09  rad
 RZ =   .2217E-04  +-   .2632E-09  rad
 TX =   .1895E-01  +-   .1852E-02  m
 TY =   .5112E-01  +-   .2142E-02  m
 TZ =  -.2659E-01  +-   .1347E-02  m
 S  =   .6017E-08  +-   .4453E-09  parts
----------------------------------------

GFZ TO JPL TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .6286E+02
 DOF        =          89
 CHI^2/DOF  =         .71
 RX =  -.6744E-08  +-   .1791E-09  rad
 RY =   .2356E-08  +-   .1750E-09  rad
 RZ =   .2817E-07  +-   .2993E-09  rad
 TX =   .4586E-02  +-   .1929E-02  m
 TY =  -.1463E+00  +-   .2403E-02  m
 TZ =   .2238E-01  +-   .1948E-02  m
 S  =   .2473E-09  +-   .5486E-09  parts
----------------------------------------

GFZ TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .4695E+02
 DOF        =         119
 CHI^2/DOF  =         .39
 RX =   .5513E-08  +-   .2025E-09  rad
 RY =   .5031E-08  +-   .1790E-09  rad
 RZ =  -.3694E-07  +-   .4646E-09  rad
 TX =   .4244E-02  +-   .1810E-02  m
 TY =   .4919E-01  +-   .2852E-02  m
 TZ =  -.1231E+00  +-   .1363E-02  m
 S  =   .6977E-09  +-   .4352E-09  parts
----------------------------------------

GFZ TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .8878E+02
 DOF        =         131
 CHI^2/DOF  =         .68
 RX =  -.1217E-07  +-   .7779E-10  rad
 RY =  -.1307E-08  +-   .7094E-10  rad
 RZ =  -.1964E-07  +-   .1465E-09  rad
 TX =  -.6546E-02  +-   .9103E-03  m
 TY =  -.1497E+00  +-   .1094E-02  m
 TZ =   .2240E-01  +-   .6994E-03  m
 S  =   .4058E-09  +-   .2325E-09  parts
----------------------------------------

JPL TO NGS TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .8453E+02
 DOF        =          98
 CHI^2/DOF  =         .86
 RX =   .1234E-07  +-   .1554E-09  rad
 RY =   .2702E-08  +-   .1733E-09  rad
 RZ =  -.6516E-07  +-   .2362E-09  rad
 TX =  -.2892E-02  +-   .1517E-02  m
 TY =   .1978E+00  +-   .1616E-02  m
 TZ =  -.1483E+00  +-   .1119E-02  m
 S  =   .4401E-09  +-   .3274E-09  parts
----------------------------------------

JPL TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .6110E+02
 DOF        =         107
 CHI^2/DOF  =         .57
 RX =  -.5266E-08  +-   .9744E-10  rad
 RY =  -.3760E-08  +-   .9931E-10  rad
 RZ =  -.4766E-07  +-   .1456E-09  rad
 TX =  -.1287E-01  +-   .1152E-02  m
 TY =  -.1527E-02  +-   .1113E-02  m
 TZ =  -.5493E-03  +-   .9450E-03  m
 S  =   .3739E-09  +-   .2734E-09  parts
----------------------------------------

NGS TO SIO TRANSFORMATION PARAMETERS
----------------------------------------
 CHI^2      =   .1054E+03
 DOF        =         134
 CHI^2/DOF  =         .79
 RX =  -.1767E-07  +-   .9653E-10  rad
 RY =  -.6425E-08  +-   .8757E-10  rad
 RZ =   .1761E-07  +-   .1790E-09  rad
 TX =  -.1228E-01  +-   .1026E-02  m
 TY =  -.1991E+00  +-   .1313E-02  m
 TZ =   .1457E+00  +-   .7972E-03  m
 S  =   .9816E-10  +-   .2476E-09  parts
----------------------------------------

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